rankwidth: init at 0.7

pkgs/development/libraries/science/math/rankwidth/default.nix

@@ -0,0 +1,28 @@
+{ stdenv
+, fetchurl
+}:
+
+stdenv.mkDerivation rec {
+  pname = "rankwidth";
+  version = "0.7";
+  name = "${pname}-${version}";
+
+  src = fetchurl {
+    url = "http://mirrors.mit.edu/sage/spkg/upstream/rw/rw-${version}.tar.gz";
+    sha256 = "1rv2v42x2506x7f10349m1wpmmfxrv9l032bkminni2gbip9cjg0";
+  };
+
+  configureFlags = [
+    "--enable-executable=no" # no igraph dependency
+  ];
+
+  # check phase is empty for now (as of version 0.7)
+  doCheck = true;
+
+  meta = with stdenv.lib; {
+    description = "Calculates rank-width and rank-decompositions";
+    license = with licenses; [ gpl2Plus ];
+    maintainers = with maintainers; [ timokau ];
+    platforms = platforms.linux;
+  };
+}